Answer:
15.87 ft
Step-by-step explanation:
For this case we have the following system of equations:

We multiply the second equation by -3:

Thus, we observe that the second equation is equivalent to the first, if we add both we get:

The equality is fulfilled. The lines are on top of each other.
Answer:
Infinite solutions
Answer:
step 3 addition: 20 + 9 = 29
step 4 subtraction: 29 - 2 = 27
solution 27
Step-by-step explanation:
since there's no more multiplication or division, you add and subtract from left to right
Answer:
18.84
Step-by-step explanation:
The formula for circumference is 2(pi)r, I think. The radius is 3. 3 times 2 is 6. 6 times 3.14 is around 18, I think.